GB1221634A - Process for the manufacture of ammonium polyphosphates - Google Patents

Process for the manufacture of ammonium polyphosphates

Info

Publication number
GB1221634A
GB1221634A GB08469/69A GB1846969A GB1221634A GB 1221634 A GB1221634 A GB 1221634A GB 08469/69 A GB08469/69 A GB 08469/69A GB 1846969 A GB1846969 A GB 1846969A GB 1221634 A GB1221634 A GB 1221634A
Authority
GB
United Kingdom
Prior art keywords
atmosphere
feed
ammonia
orthophosphate
mol
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB08469/69A
Inventor
Gero Heymer
Wilfried Gerhardt
Heinz Harnisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BK Ladenburg GmbH
Knapsack AG
Original Assignee
Knapsack AG
Benckiser Knapsack GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Knapsack AG, Benckiser Knapsack GmbH filed Critical Knapsack AG
Publication of GB1221634A publication Critical patent/GB1221634A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
    • C05B13/06—Alkali and alkaline earth meta- or polyphosphate fertilisers
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/28—Ammonium phosphates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/38—Condensed phosphates
    • C01B25/40—Polyphosphates
    • C01B25/405—Polyphosphates of ammonium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Fertilizers (AREA)

Abstract

1,221,634. Ammonium polyphosphates. KNAPSACK A.G. and BENCKISER-KNAPSACK G.m.b.H. 10 April, 1969 [11 April, 1968], No. 18469/69. Heading C1A. Chain ammonium polyphosphates of the general formula (NH 4 PO 3 ) n , where n is a number between 10 and 400, are prepared by preparing a feed mixture of ammonium orthophosphate, phosphorus pentoxide and urea in the ratio of wherein x is 0 to 0.5, preferably 0.05 to 0.25, and annealing at 200-340‹ C. for 10 to 60 minutes in contact with ammonia, mixtures in which x is smaller than 0.25 being initially treated at temperatures below 190‹ C. for 5 to 10 minutes in an ammonia atmosphere. The ammonia partial pressure is preferably at least 0.6 atmosphere for temperatures of 200- 300‹ C., and at least 0.9 atmosphere for temperatures above 300‹ C. During the initial treatment below 190‹ C. the ammonia partial pressure is preferably at least 0.4 atmosphere. The feed mixture may be heated either in a tunnel kiln or in a rotary furnace, both having a controllable temperature gradient. If a tunnel kiln is used the feed preferably contains 0.06 mol. urea per mol. of orthophosphate, and if a rotary furnace is used, the feed preferably contains 0.1 to 0.15 mol. urea per mol. of orthophosphate. A portion of the ground final product may be recycled to the rotary furnace, such that the ratio of feed : recycle material is about 1 : 1.
GB08469/69A 1968-04-11 1969-04-10 Process for the manufacture of ammonium polyphosphates Expired GB1221634A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1767205A DE1767205C2 (en) 1968-04-11 1968-04-11 Process for the production of ammonium polyphosphates

Publications (1)

Publication Number Publication Date
GB1221634A true GB1221634A (en) 1971-02-03

Family

ID=5699265

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08469/69A Expired GB1221634A (en) 1968-04-11 1969-04-10 Process for the manufacture of ammonium polyphosphates

Country Status (12)

Country Link
US (1) US3653821A (en)
AT (1) AT286235B (en)
BE (1) BE731421A (en)
CH (1) CH502264A (en)
DE (1) DE1767205C2 (en)
DK (1) DK139905C (en)
FR (1) FR2006107A1 (en)
GB (1) GB1221634A (en)
IL (1) IL31982A (en)
NL (1) NL159632B (en)
NO (1) NO124068B (en)
SE (1) SE361028B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE408787B (en) * 1973-06-14 1979-07-09 Hoechst Ag METHODS AND DEVICES FOR THE PREPARATION OF MAINLY WATER-SOLUBLE CHAIN-SHAPED AMMONIUM POLYPHOSPHATES
CA1041732A (en) * 1974-07-29 1978-11-07 Cyanamid Of Canada Manufacture of water-insoluble ammonium polyphosphate
DE2850244A1 (en) * 1978-11-20 1980-05-29 Hoechst Ag ADDITIVE FOR METAL WORKING
DE3038836A1 (en) * 1980-10-15 1982-05-27 Hoechst Ag, 6000 Frankfurt METHOD FOR PRODUCING LONG CHAIN AMMONIUM POLYPHOSPHATE
DE3208202A1 (en) * 1982-03-06 1983-09-08 Hoechst Ag, 6230 Frankfurt CHAIN-SHAPED, ESSENTIAL WATER-INSOLUBLE AMMONIUM POLYPHOSPHATES AND METHOD FOR THE PRODUCTION THEREOF
US4687651A (en) * 1985-10-15 1987-08-18 Thermal Science, Inc. Method for producing ammonium polyphosphate
US4832928A (en) * 1985-10-15 1989-05-23 Thermal Science, Inc. Method for producing ammonium polyphosphate
DE3925675A1 (en) * 1989-08-03 1991-02-07 Hoechst Ag METHOD FOR PRODUCING AMMONIUM POLYPHOSPHATE, WHICH GIVES A LOW-VISCOSE AQUEOUS SUSPENSION
DE4006862A1 (en) * 1990-03-05 1991-09-12 Hoechst Ag PLANT FOR THE PRODUCTION OF AMMONIUM POLYPHOSPHATE
KR100190204B1 (en) * 1991-01-10 1999-06-01 고토 기치 Process for producing finely divided particles of ii type ammonium polyphosphate
DE19517499A1 (en) * 1995-05-12 1996-11-14 Budenheim Rud A Oetker Chemie Ammonium poly:phosphate with low solubility used as flame resistant agent
DE102008021027A1 (en) * 2008-04-25 2009-10-29 Bk Giulini Gmbh Process for the preparation of flame retardants and their use in textiles
WO2017067906A1 (en) * 2015-10-20 2017-04-27 Clariant International Ltd Mixtures of ammonium polyphosphate and at least one soluble ionic compound containing sulfate and/or is capable of releasing sulfate ions

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3241946A (en) * 1962-03-30 1966-03-22 Union Oil Co Ammonium phosphate fertilizer solids derived from anhydrous liquid phosphoric acid
US3243279A (en) * 1962-03-30 1966-03-29 Union Oil Co Ammonium phosphate solids derived from anhydrous liquid phosphoric acid
GB1001984A (en) * 1963-03-27 1965-08-18 Ici Ltd Improvements in and relating to phosphates
DE1567674C3 (en) * 1963-08-13 1986-11-13 Monsanto Co., St. Louis, Mo. Water-insoluble ammonium polyphosphates
US3397035A (en) * 1964-12-22 1968-08-13 Monsanto Co Ammonium polyphosphates
US3419349A (en) * 1965-01-15 1968-12-31 Albert Ag Chem Werke Process for the manufacture of catenarily condensed ammonium-phosphates and ammonium-metal-phosphates
US3495937A (en) * 1965-03-16 1970-02-17 Chung Yu Shen Ammonium polyphosphate process

Also Published As

Publication number Publication date
AT286235B (en) 1970-11-25
NL6905551A (en) 1969-10-14
NO124068B (en) 1972-02-28
BE731421A (en) 1969-10-13
NL159632B (en) 1979-03-15
CH502264A (en) 1971-01-31
IL31982A0 (en) 1969-06-25
DE1767205C2 (en) 1978-06-01
SE361028B (en) 1973-10-15
FR2006107A1 (en) 1969-12-19
US3653821A (en) 1972-04-04
DK139905C (en) 1979-10-08
DK139905B (en) 1979-05-14
DE1767205B1 (en) 1972-05-25
IL31982A (en) 1972-12-29

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